HVAC- Expertise in 3 Mins

 Today I am writing some important basic formulas. These are the basic thumb rules in the HVAC industry which even Experts use after they go through several years of complex formula. Because they just work fine.

HVAC- Heating Ventilation and Air Conditioning

Application- For Heating and Cooling the Enclosed Environment

Capacity Required:

1.        120 sq.ft/Ton→ Very Hot Area

1.        150 sq.ft/ Ton→ in Normally Hot area

2.        180 sq.ft/ Ton→ in Cold Areas

Technical terms for Capacity

1 Ton= 3.5 kW of Cooling Capacity (Note: 1 ton consumes almost 1 kW/hr of power and cools 3.5 kW of heat to required level)

1 HP= 0.8 Ton: If someone says 20 HP outdoor units, it is 16 Ton.

Pipe size in mm (Liquid pipe/ Gas pipe) (If possible refer to the catalogue): applicable to VRF and Split Units.

6/12: upto 1.5 Ton

9/15: Upto 4 Ton

9/19: 4-6 Ton including 6 Ton

9/22: Upto 8 Ton including 8 Ton

12/28: Upto 12 Ton including 12 Ton

15/28: Up to 20 Ton

19/34: Upto 26 Ton

19/41: Up to 36 Ton

22/41: Above 36

Exhaust Air: used in Toilets to remove air out: 1 CFM per square feet. 25 CFM for normal toilet, 50 CFM for public

Fresh Air: supplied to enclosed rooms. 5-7 CFM per person and .06 CFM/sq.ft.

Extract Air: Remove air out of ordinary room like pantry, kitchen or polluted rooms.

 



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